1. europium, Eu, atomic number 63, metallic element, metal
usage: a bivalent and trivalent metallic element of the rare earth group
2. European Union, EU, European Community, EC, European Economic Community, EEC, Common Market, Europe, world organization, world organisation, international organization, international organisation, global organization
usage: an international organization of European countries formed after World War II to reduce trade barriers and increase cooperation among its members; "he tried to take Britain into the Europen Union"